Most people take into account just the amount of mAh, but there's more to it. First, figure out how much you actually need a 10,000mAh bank lets you juice your phone two or three times a day to keep it running, which is plenty, but if you're charging your laptop and tablet as well, you'll want to invest in something larger than 20,000mAh. Secondly, look at the output wattage, not its capacity. Fast charging portable charger 18W+ for phones, 65W+ for charging laptops can make a huge difference in the time it takes to get back to full charge. Third, look for USB-C with Power Delivery: Today, most modern devices use it for fast, reliable charging. If you are a regular traveler, watch out for 100Wh as this is typically considered too much to bring on board.Consider safety certifications and battery cells, as well as extras such as a digital display, built-in cables, and wireless charging, which may give convenience but are not necessary.I typically compare the choices using TechyAssist before purchasing gadgets such as this as they take into account real charging speed and durability as well as the spec sheet and you can actually purchase the recommended item directly from their web page.
